131432422240 has 96 divisors (see below), whose sum is σ = 356131266624. Its totient is φ = 44902072320.

The previous prime is 131432422169. The next prime is 131432422241. The reversal of 131432422240 is 42224234131.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 131432422199 and 131432422208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131432422241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105912 + ... + 523528.

It is an arithmetic number, because the mean of its divisors is an integer number (3709700694).

Almost surely, 2^131432422240 is an apocalyptic number.

131432422240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131432422240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178065633312).

131432422240 is an abundant number, since it is smaller than the sum of its proper divisors (224698844384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131432422240 is a wasteful number, since it uses less digits than its factorization.

131432422240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417920 (or 417912 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 131432422240 its reverse (42224234131), we get a palindrome (173656656371).

The spelling of 131432422240 in words is "one hundred thirty-one billion, four hundred thirty-two million, four hundred twenty-two thousand, two hundred forty".